CN216389643U

CN216389643U - Aluminum-shell battery busbar welding auxiliary tool

Info

Publication number: CN216389643U
Application number: CN202123124313.2U
Authority: CN
Inventors: 胡冉; 龚贤海; 孙光忠; 刘晓群; 左世伟
Original assignee: Camel Group New Energy Battery Co Ltd
Current assignee: Camel Group New Energy Battery Co Ltd
Priority date: 2021-12-13
Filing date: 2021-12-13
Publication date: 2022-04-26
Anticipated expiration: 2031-12-13

Abstract

An aluminum shell battery busbar welding auxiliary tool comprises a busbar positioning plate and a plurality of spring pin mechanisms arranged on four side surfaces of the busbar positioning plate and used for fixing busbars, wherein a plurality of busbar positioning holes used for positioning the busbars and poles on an aluminum shell battery module are formed in the busbar positioning plate, and supporting steps used for matching with the spring pin mechanisms and fixing the busbars are arranged on the upper portion of the inner side wall of each busbar positioning hole; the spring pin mechanisms correspond to the bus bar positioning holes one by one, each spring pin mechanism comprises at least one pin which can be telescopically positioned along with the driving device, the front end of each pin is provided with a notch used for clamping the bus bar, the outer side wall of each bus bar positioning hole is provided with a pin mounting hole used for mounting the pin, and the pin mounting holes are communicated with the bus bar positioning holes. Simple, practical, swift, low-cost, assurance busbar welding quality.

Description

Aluminum-shell battery busbar welding auxiliary tool

Technical Field

The utility model relates to the technical field of battery module manufacturing, in particular to an auxiliary welding tool for an aluminum shell battery bus bar.

Background

In recent years, the new energy automobile industry in China is rapidly developed, and the new energy automobile is more and more popular in use. The power battery module is one of the core components of the new energy automobile, and the requirement of the production process is very high, especially the quality and safety of the assembly of the battery module need to be ensured.

In the prior art, in the process of welding the bus bar on a production line, the bus bar is manually placed on an aluminum shell battery pole and then welded. Because the number of the busbars is large, the collecting wires are welded on the busbars in the previous process, the busbars can touch the positive electrode and the negative electrode of the battery simultaneously in the placing process when the busbars are placed in the mode, the ignition phenomenon can be generated, the whole module can be scrapped seriously, and personnel are injured.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide a set of bus bar welding auxiliary tool which is simple, practical, quick, low in cost, capable of ensuring the bus bar welding quality and simple to operate.

The technical scheme adopted by the utility model for solving the technical problems is as follows: an aluminum shell battery busbar welding auxiliary tool comprises a busbar positioning plate and a plurality of spring pin mechanisms arranged on four side surfaces of the busbar positioning plate and used for fixing busbars, wherein a plurality of busbar positioning holes used for positioning the busbars and poles on an aluminum shell battery module are formed in the busbar positioning plate, and supporting steps used for matching with the spring pin mechanisms and fixing the busbars are arranged on the upper portion of the inner side wall of each busbar positioning hole; the spring pin mechanisms correspond to the bus bar positioning holes one by one, each spring pin mechanism comprises at least one pin which can be telescopically positioned along with the driving device, the front end of each pin is provided with a notch used for clamping the bus bar, the outer side wall of each bus bar positioning hole is provided with a pin mounting hole used for mounting the pin, and the pin mounting holes are communicated with the bus bar positioning holes.

The middle part of the pin is provided with a convex ring, the tail part of the pin is provided with a flat opening, and the pin mounting hole is a step hole matched with the pin.

The driving device comprises a spring and a pin cover plate fixed on the side wall of the positioning plate of the confluence row, the spring is sleeved at the tail part of the pin, the outer diameter of the spring is not larger than the inner diameter of the large end part of the step hole, one end of the spring is abutted against a convex ring in the middle of the pin, the other end of the spring is abutted against the pin cover plate, a crescent hole for preventing the pin from rotating is arranged on the pin cover plate, and a flat port at the tail end of the pin is arranged in the crescent hole.

The outer side wall of the bus positioning plate is provided with a plurality of threaded holes corresponding to the pin cover plate, and the threaded holes are fastened with screws installed in the threaded holes.

The lower part of the inner wall of the positioning hole of the confluence row is provided with a yielding groove for buckling at two ends of the yielding pole.

The lower part of the outer side wall of the bus positioning plate is provided with a module side plate abdicating groove, and the lower part of the inner side wall of the bus positioning plate is provided with a bus wire harness fixing hole. The bus bar wire harness fixing hole is used for allowing the bus bar wire harness to pass through.

The confluence row positioning plate is made of bakelite materials.

The bus bar positioning plate is made of bakelite, and can play an insulating role when a bus bar is placed, so that short circuit and ignition of a battery are prevented. The long U-shaped groove processed on the bus positioning plate is processed according to the installation position of the bus on the module and is used for positioning the bus on the module; the slot hole at one end of the bus positioning plate is processed according to the size of the pole, and can play a positioning role in use, so that the bus is more accurately positioned on the module when the bus is placed.

The pin is made of stainless steel, and the head of the pin is provided with a notch, so that the bus bar can be just clamped in the notch, and the bus bar is not easy to fall off in the carrying process. A step is processed on the tail part of the pin to prevent the pin from rotating in disorder in the hole, so that the notch at the other end can be just corresponding to the end face of the bus bar.

The spring is made of stainless steel, and the pressure is high enough, so that the bus bar is not disturbed when being carried and is not easy to fall out of the groove.

The pin cover plate is provided with crescent-shaped small holes, so that the pin can be limited and cannot rotate randomly.

According to the utility model, the side surface of the long groove on the positioning plate is provided with the small step, and the bus bar is placed on the step during transportation, so that the bus bar cannot fall out during transportation. The height difference exists between the step and the installation height of the bus bar, so that the positioning of the bus bar is not influenced when the bus bar is installed. The whole bus bar is made into a frame structure, so that the whole integrity is better and the bus bar is more durable.

The spring pin mechanism can effectively fix a bus bar in a limited space, the notch at the head of the pin can clamp the end face of the bus bar, the tail of the pin is provided with a flat opening, and the flat opening is fixed with the crescent hole on the pin cover plate and can limit the rotation of the pin, so that the time for adjusting the notch direction at the head of the pin is saved when the bus bar is placed.

The bus bar assembling device is simple in structure and low in manufacturing cost, the bus bar is assembled below a production line firstly, and then the bus bar is transported to the production line and placed on the module, so that the time of the production line is saved, and the speed of the production line is increased. The busbar is placed in the locating hole of busbar auxiliary fixtures under the line, and when being placed on the module, the busbar can not be disorderly moved under the action of the spring pin mechanism, so that the risk of module short circuit easily caused when the busbar is directly placed on the production line is solved. And the welding process has no interference with a laser welding machine, so that the product yield is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a partial exploded view of the present invention;

FIG. 4 is a schematic view of a bus positioning plate according to the present invention;

FIG. 5 is a cross-sectional view of the spring pin mechanism of the present invention;

in the figure: 1-bus positioning plate, 2-aluminum shell battery module, 3-spring pin mechanism, 4-bus, 101-bus positioning hole, 102-supporting step, 103-abdicating groove, 104-module side plate abdicating groove, 105-pin mounting hole, 106-screw hole, 107-bus wire harness fixing hole, 301-pin, 302-spring, 303-pin cover plate and 304-screw.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

In fig. 1, 2 and 3, the present invention includes a bus positioning plate 1 for placing a bus on an aluminum-case battery module 2, wherein the bus positioning plate 1 is made of bakelite. The bus positioning plate 1 is provided with a plurality of bus positioning holes 101 for positioning the bus 4 and the upper pole of the aluminum-shell battery module 2, the four sides of the bus positioning plate 1 are provided with spring pin mechanisms 3 which are corresponding to the bus positioning holes 101 one by one and used for fixing the bus 4, the lower part of the outer side wall of the bus positioning plate 1 is provided with a module side plate abdicating hole 104, and the lower part of the inner side wall of the bus positioning plate 1 is provided with a bus harness fixing hole 107. The upper part of the inner side wall of the busbar positioning hole 101 is provided with a supporting step 102 for matching and fixing the busbar 4 with the spring pin mechanism 3, and the lower part of the inner wall of the busbar positioning hole 101 is provided with a yielding groove 103 for buckling two ends of a yielding pole; the spring pin mechanism 3 comprises a pin 301 arranged in a pin mounting hole 105 on the side wall of the bus positioning plate 1, a spring 302, the pin 301 is limited in the pin mounting hole 105 through a pin cover plate 303 and a screw 304, the pin mounting hole 105 is communicated with the bus positioning hole 101, and the front end of the pin 301 is provided with a notch for clamping the bus 4.

In the using process, the bus bar 4 is placed in the bus bar positioning hole 101 on the bus bar positioning plate 1, then one end of the bus bar 4 is abutted against the notch of the head part of the pin 301, the other end of the bus bar 4 is placed downwards, the pin 301 extrudes the bus bar 4 onto the supporting step 102 on the side surface under the action of the spring 302, thus after the rest bus bar 4 is placed, the bus bar positioning plate 1 is taken up and placed on the aluminum shell battery module 2, the bus bar positioning plate 1 is moved to enable the two ends of the two bus bar positioning holes 101 corresponding to the poles to be exactly corresponding to the poles of the aluminum shell battery module 2, the bus bar 4 is pressed downwards by force, after the pin 301 is pressed in, the bus bar 4 is placed, and then the welding operation can be started.

In fig. 4 and 5, the front end of the pin 301 is provided with a notch, so that the bus bar 4 can be just clamped when in use, and the bus bar 4 is prevented from moving up and down in the conveying process. A convex ring is arranged in the middle of the pin 301, and the pin mounting hole 105 is a stepped hole matched with the pin 301. The spring 302 is sleeved at the tail part of the pin 301, the outer diameter of the spring 302 is not larger than the inner diameter of the large end part of the stepped hole, one end of the spring 302 abuts against a convex ring in the middle of the pin, the other end of the spring 302 abuts against a pin cover plate 303, a plurality of threaded holes 106 are formed in the positions, corresponding to the outer side walls of the pin cover plate 303 and the bus bar positioning plate 1, of the outer side walls, and the spring 302 and the pin cover plate 303 are fastened with each other through screws 304 installed in the threaded holes 106. The tail of the pin 301 is provided with a flat opening, a pin cover plate 303 is provided with a crescent hole for preventing the pin 301 from rotating, and the flat opening at the tail end of the pin 301 is arranged in the crescent hole. The pin 301 does not rotate on its own after engagement of the pin cover 303, so that the front slot is stabilized in a fixed position, facilitating installation of the busbar 4.

The specific working principle is as follows: a worker firstly places the bus bar positioning plate 1 horizontally under a production line, then takes the bus bars 4 up, sequentially clamps the bus bars into the supporting steps 102 on the side surface of the middle groove of the bus bar positioning plate 1, the other ends of the bus bars 4 are clamped into the notches of the pins 301, the wire harnesses on the bus bars are placed into the wire harness fixing holes 107, then the whole positioning plate 1 is taken up and placed on the aluminum shell battery module 2, the battery poles just correspond to the bus bar positioning holes 101, after the positioning is completed, the bus bars 4 are pressed down one by one to be separated from the steps 102 on the side surface of the bus bar positioning holes 101, and then the aluminum shell battery module 2 is conveyed to the next station for welding.

The above-described embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, many variations and modifications are possible without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides an aluminum hull battery busbar welding auxiliary fixtures which characterized in that: the positioning device comprises a bus bar positioning plate (1) and a plurality of spring pin mechanisms (3) which are arranged on four side surfaces of the bus bar positioning plate (1) and used for fixing a bus bar (4), wherein a plurality of bus bar positioning holes (101) used for positioning the bus bar (4) and a pole column on an aluminum shell battery module (2) are processed on the bus bar positioning plate (1), and a supporting step (102) used for being matched with the spring pin mechanisms (3) and fixing the bus bar (4) is arranged on the upper portion of the inner side wall of each bus bar positioning hole (101); the spring pin mechanisms (3) correspond to the bus bar positioning holes (101) in a one-to-one mode, each spring pin mechanism (3) comprises at least one pin (301) capable of being positioned with the driving device in a telescopic mode, a notch used for clamping the bus bar (4) is formed in the front end of each pin (301), pin mounting holes (105) used for mounting the pins (301) are formed in the outer side wall of each bus bar positioning hole (101), and the pin mounting holes (105) are communicated with the bus bar positioning holes (101).

2. The aluminum-shell battery bus bar welding auxiliary tool of claim 1, characterized in that: the middle part of the pin (301) is provided with a convex ring, the tail part of the pin is provided with a flat opening, and the pin mounting hole (105) is a stepped hole matched with the pin (301).

3. The aluminum-shell battery bus bar welding auxiliary tool as set forth in claim 1 or 2, wherein: spring (302) that drive arrangement included, fix pin apron (303) at the row locating plate of converging (1) lateral wall, spring (302) suit is in pin (301) afterbody, and spring (302) external diameter is not more than the big tip internal diameter in step hole, and spring (302) one end offsets with pin middle part bulge loop, and the other end offsets with pin apron (303), is equipped with the crescent hole that is used for preventing pin (301) rotation on pin apron (303), and the flat mouth dress of pin (301) tail end is in the crescent hole.

4. The aluminum-shell battery bus bar welding auxiliary tool of claim 3, characterized in that: the outer side wall of the bus bar positioning plate (1) is provided with a plurality of threaded holes (106) corresponding to the pin cover plate (303), and the threaded holes (106) are fastened with each other through screws (304) installed in the threaded holes (106).

5. The aluminum-shell battery bus bar welding auxiliary tool of claim 1, characterized in that: the lower part of the inner wall of the busbar positioning hole (101) is provided with a yielding groove (103) for buckling the two ends of the yielding pole.

6. The aluminum-shell battery bus bar welding auxiliary tool as set forth in claim 1 or 5, wherein: the lower part of the outer side wall of the bus positioning plate (1) is provided with a module side plate abdicating hole (104), and the lower part of the inner side wall of the bus positioning plate (1) is provided with a bus wire harness fixing hole (107).

7. The aluminum-shell battery bus bar welding auxiliary tool of claim 1, characterized in that: the confluence row positioning plate (1) is made of bakelite materials.